You see, when you fragment foton to two parts, every part has diferent spin ( lets say rotation ) than the other. So if first part has left rotation, then the second part has right rotation.
Great thing is, that the change is done immediately, even when you move one part for example to the Proxima Centauri and the other part is on Earth, the change will be still instant.
Amazing, isnt it?
Well we have new way of comunication... or not?
By the Einsteins Theory of Relativity, no information ( not atom or particle ) cant travel faster than light.
Problem is, that this way of "comunication" cant be used, just because of the quantum theory. Lets say it this way : When you observe something, it changes by our observing.
So the other side on the Proxima Centauri wont know if you readed the atom (foton, particle... whatever) or changed it knowingly, because it changes every time you want to read it. You see, it really changes every time when you want so see its spin. It doesent matter if its on Earth od Proxima, it just changes, so no side can know when it was only readen or only written.
It is scientificaly proven so no flame pls
I hope you enjoyed reading my pointless journal
But maybe you are now smarter